Your grammar and clinical tone look pretty good - I see a few run-on sentences and minor errors like that, but the technical quality is passable.

I think most of this would have to be rewritten, though; there's a lot of material here, but it all sticks very close to the basic idea of tattoos that turn into monsters, so the length comes off as repetitive and makes it hard to get through. I think you need to cut pretty much all the different types of the monster and just make it one interesting thing rather than a bunch of generic variations. The ending test logs in particular just repeat information from earlier in the article and feel unnecessary.

The first description, with the dream, was the part that I found the most interesting; I really liked the imagery of it, though I felt like it was a little bit too specific to work as the thing that happens every single time (especially with the quote comparing its sound to Tuvan throat singing - that's a really specific type of noise that I can't imagine people all recognizing). The tattoo just having a sound-based attack when it comes into the real world was kind of a letdown (though it was the best of the four variations).

I think multiple different dreams about the creepy vibrating stick figure would be better than multiple varieties of creature. For the stick figure to just run around killing people when it climbs out of the person is pretty much the least interesting thing you could have it do; they could climb into other people and mess up their dreams, or be like gremlins and sabotage things, or start collecting patches of skin from people in order to stamp more of itself onto them - I think weirdness and low-key menace are a much better approach to an entry like this than just having a beast pop out and rampage until someone cuts off its head.

toasterhead is a great example of a monster article with this kind of creepy nightmare imagery at its core. The author doesn't go into a whole encyclopedia of all the different machine-creatures that hang out in toasterhead's pocket dimension; they just focus on the central creepy image (machines shaped like people, which mutilate people to be shaped like machines). The imagery is made more potent and menacing by keeping short and to the point. I think that's the kind of change you want to make here - you probably want to cut at least three fourths of this, and try to focus on weird, creepily threatening dream imagery rather than a monster with combat-related strengths and weaknesses.